Yep, it would be really nice if there were some kind of standards for how much content goes to cc vs mains. That way people could know how big a center channel they need. Right now the cc content relative to each of the mains seems to be anything from "significantly more" to "almost nothing".

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8